The Monolith Liquid Spark Headphone Amplifier by Monoprice is a brand new, stylish addition to your audio setup. Its sleek gray design and liquid spark style make it a standout piece. This headphone amplifier, powered by a single audio input, is perfect for enhancing your listening experience with its single output connector. The Monolith Liquid Spark Headphone Amplifier is a high-quality and unique choice for any audio enthusiast looking to elevate their sound.